21459750

素因数分解:

$2^1\times 3^1\times 5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:135

約数の個数: 128

約数和(自身を含む): 60383232

約数和(自身を除く): 38923482

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 25, 26, 30, 31, 39, 50, 62, 65, 71, 75, 78, 93, 125, 130, 142, 150, 155, 186, 195, 213, 250, 310, 325, 355, 375, 390, 403, 426, 465, 650, 710, 750, 775, 806, 923, 930, 975, 1065, 1209, 1550, 1625, 1775, 1846, 1950, 2015, 2130, 2201, 2325, 2418, 2769, 3250, 3550, 3875, 4030, 4402, 4615, 4650, 4875, 5325, 5538, 6045, 6603, 7750, 8875, 9230, 9750, 10075, 10650, 11005, 11625, 12090, 13206, 13845, 17750, 20150, 22010, 23075, 23250, 26625, 27690, 28613, 30225, 33015, 46150, 50375, 53250, 55025, 57226, 60450, 66030, 69225, 85839, 100750, 110050, 115375, 138450, 143065, 151125, 165075, 171678, 230750, 275125, 286130, 302250, 330150, 346125, 429195, 550250, 692250, 715325, 825375, 858390, 1430650, 1650750, 2145975, 3576625, 4291950, 7153250, 10729875, 21459750]

約数ペア:

[(1, 21459750), (2, 10729875), (3, 7153250), (5, 4291950), (6, 3576625), (10, 2145975), (13, 1650750), (15, 1430650), (25, 858390), (26, 825375), (30, 715325), (31, 692250), (39, 550250), (50, 429195), (62, 346125), (65, 330150), (71, 302250), (75, 286130), (78, 275125), (93, 230750), (125, 171678), (130, 165075), (142, 151125), (150, 143065), (155, 138450), (186, 115375), (195, 110050), (213, 100750), (250, 85839), (310, 69225), (325, 66030), (355, 60450), (375, 57226), (390, 55025), (403, 53250), (426, 50375), (465, 46150), (650, 33015), (710, 30225), (750, 28613), (775, 27690), (806, 26625), (923, 23250), (930, 23075), (975, 22010), (1065, 20150), (1209, 17750), (1550, 13845), (1625, 13206), (1775, 12090), (1846, 11625), (1950, 11005), (2015, 10650), (2130, 10075), (2201, 9750), (2325, 9230), (2418, 8875), (2769, 7750), (3250, 6603), (3550, 6045), (3875, 5538), (4030, 5325), (4402, 4875), (4615, 4650)]