2019998750

素因数分解:

$2^1\times 5^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{677}}^1$

素因数の和:748

約数の個数: 160

約数和(自身を含む): 4880037888

約数和(自身を除く): 2860039138

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 25, 31, 35, 50, 55, 62, 70, 77, 110, 125, 154, 155, 175, 217, 250, 275, 310, 341, 350, 385, 434, 550, 625, 677, 682, 770, 775, 875, 1085, 1250, 1354, 1375, 1550, 1705, 1750, 1925, 2170, 2387, 2750, 3385, 3410, 3850, 3875, 4375, 4739, 4774, 5425, 6770, 6875, 7447, 7750, 8525, 8750, 9478, 9625, 10850, 11935, 13750, 14894, 16925, 17050, 19250, 19375, 20987, 23695, 23870, 27125, 33850, 37235, 38750, 41974, 42625, 47390, 48125, 52129, 54250, 59675, 74470, 84625, 85250, 96250, 104258, 104935, 118475, 119350, 135625, 146909, 169250, 186175, 209870, 213125, 230857, 236950, 260645, 271250, 293818, 298375, 372350, 423125, 426250, 461714, 521290, 524675, 592375, 596750, 734545, 846250, 930875, 1049350, 1154285, 1184750, 1303225, 1469090, 1491875, 1615999, 1861750, 2308570, 2606450, 2623375, 2961875, 2983750, 3231998, 3672725, 4654375, 5246750, 5771425, 5923750, 6516125, 7345450, 8079995, 9308750, 11542850, 13032250, 13116875, 16159990, 18363625, 26233750, 28857125, 32580625, 36727250, 40399975, 57714250, 65161250, 80799950, 91818125, 144285625, 183636250, 201999875, 288571250, 403999750, 1009999375, 2019998750]

約数ペア:

[(1, 2019998750), (2, 1009999375), (5, 403999750), (7, 288571250), (10, 201999875), (11, 183636250), (14, 144285625), (22, 91818125), (25, 80799950), (31, 65161250), (35, 57714250), (50, 40399975), (55, 36727250), (62, 32580625), (70, 28857125), (77, 26233750), (110, 18363625), (125, 16159990), (154, 13116875), (155, 13032250), (175, 11542850), (217, 9308750), (250, 8079995), (275, 7345450), (310, 6516125), (341, 5923750), (350, 5771425), (385, 5246750), (434, 4654375), (550, 3672725), (625, 3231998), (677, 2983750), (682, 2961875), (770, 2623375), (775, 2606450), (875, 2308570), (1085, 1861750), (1250, 1615999), (1354, 1491875), (1375, 1469090), (1550, 1303225), (1705, 1184750), (1750, 1154285), (1925, 1049350), (2170, 930875), (2387, 846250), (2750, 734545), (3385, 596750), (3410, 592375), (3850, 524675), (3875, 521290), (4375, 461714), (4739, 426250), (4774, 423125), (5425, 372350), (6770, 298375), (6875, 293818), (7447, 271250), (7750, 260645), (8525, 236950), (8750, 230857), (9478, 213125), (9625, 209870), (10850, 186175), (11935, 169250), (13750, 146909), (14894, 135625), (16925, 119350), (17050, 118475), (19250, 104935), (19375, 104258), (20987, 96250), (23695, 85250), (23870, 84625), (27125, 74470), (33850, 59675), (37235, 54250), (38750, 52129), (41974, 48125), (42625, 47390)]