19981856925

素因数分解:

$3^3\times 5^2\times {\mathrm{61}}^1\times {\mathrm{97}}^1\times {\mathrm{5003}}^1$

素因数の和:5180

約数の個数: 96

約数和(自身を含む): 37701336960

約数和(自身を除く): 17719480035

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 61, 75, 97, 135, 183, 225, 291, 305, 485, 549, 675, 873, 915, 1455, 1525, 1647, 2425, 2619, 2745, 4365, 4575, 5003, 5917, 7275, 8235, 13095, 13725, 15009, 17751, 21825, 25015, 29585, 41175, 45027, 53253, 65475, 75045, 88755, 125075, 135081, 147925, 159759, 225135, 266265, 305183, 375225, 443775, 485291, 675405, 798795, 915549, 1125675, 1331325, 1455873, 1525915, 2426455, 2746647, 3377025, 3993975, 4367619, 4577745, 7279365, 7629575, 8239941, 12132275, 13102857, 13733235, 21838095, 22888725, 29602751, 36396825, 41199705, 65514285, 68666175, 88808253, 109190475, 148013755, 205998525, 266424759, 327571425, 444041265, 740068775, 799274277, 1332123795, 2220206325, 3996371385, 6660618975, 19981856925]

約数ペア:

[(1, 19981856925), (3, 6660618975), (5, 3996371385), (9, 2220206325), (15, 1332123795), (25, 799274277), (27, 740068775), (45, 444041265), (61, 327571425), (75, 266424759), (97, 205998525), (135, 148013755), (183, 109190475), (225, 88808253), (291, 68666175), (305, 65514285), (485, 41199705), (549, 36396825), (675, 29602751), (873, 22888725), (915, 21838095), (1455, 13733235), (1525, 13102857), (1647, 12132275), (2425, 8239941), (2619, 7629575), (2745, 7279365), (4365, 4577745), (4575, 4367619), (5003, 3993975), (5917, 3377025), (7275, 2746647), (8235, 2426455), (13095, 1525915), (13725, 1455873), (15009, 1331325), (17751, 1125675), (21825, 915549), (25015, 798795), (29585, 675405), (41175, 485291), (45027, 443775), (53253, 375225), (65475, 305183), (75045, 266265), (88755, 225135), (125075, 159759), (135081, 147925)]