640168158250

素因数分解:

$2^1\times 5^3\times {\mathrm{31}}^1\times {\mathrm{191}}^1\times {\mathrm{251}}^1\times {\mathrm{1723}}^1$

素因数の和:2213

約数の個数: 128

約数和(自身を含む): 1249208303616

約数和(自身を除く): 609040145366

約数列:

[1, 2, 5, 10, 25, 31, 50, 62, 125, 155, 191, 250, 251, 310, 382, 502, 775, 955, 1255, 1550, 1723, 1910, 2510, 3446, 3875, 4775, 5921, 6275, 7750, 7781, 8615, 9550, 11842, 12550, 15562, 17230, 23875, 29605, 31375, 38905, 43075, 47750, 47941, 53413, 59210, 62750, 77810, 86150, 95882, 106826, 148025, 194525, 215375, 239705, 267065, 296050, 329093, 389050, 430750, 432473, 479410, 534130, 658186, 740125, 864946, 972625, 1198525, 1335325, 1480250, 1486171, 1645465, 1945250, 2162365, 2397050, 2670650, 2972342, 3290930, 4324730, 5992625, 6676625, 7430855, 8227325, 10201883, 10811825, 11985250, 13353250, 13406663, 14861710, 16454650, 20403766, 21623650, 26813326, 37154275, 41136625, 51009415, 54059125, 67033315, 74308550, 82273250, 82602343, 102018830, 108118250, 134066630, 165204686, 185771375, 255047075, 335166575, 371542750, 413011715, 510094150, 670333150, 826023430, 1275235375, 1675832875, 2065058575, 2550470750, 2560672633, 3351665750, 4130117150, 5121345266, 10325292875, 12803363165, 20650585750, 25606726330, 64016815825, 128033631650, 320084079125, 640168158250]

約数ペア:

[(1, 640168158250), (2, 320084079125), (5, 128033631650), (10, 64016815825), (25, 25606726330), (31, 20650585750), (50, 12803363165), (62, 10325292875), (125, 5121345266), (155, 4130117150), (191, 3351665750), (250, 2560672633), (251, 2550470750), (310, 2065058575), (382, 1675832875), (502, 1275235375), (775, 826023430), (955, 670333150), (1255, 510094150), (1550, 413011715), (1723, 371542750), (1910, 335166575), (2510, 255047075), (3446, 185771375), (3875, 165204686), (4775, 134066630), (5921, 108118250), (6275, 102018830), (7750, 82602343), (7781, 82273250), (8615, 74308550), (9550, 67033315), (11842, 54059125), (12550, 51009415), (15562, 41136625), (17230, 37154275), (23875, 26813326), (29605, 21623650), (31375, 20403766), (38905, 16454650), (43075, 14861710), (47750, 13406663), (47941, 13353250), (53413, 11985250), (59210, 10811825), (62750, 10201883), (77810, 8227325), (86150, 7430855), (95882, 6676625), (106826, 5992625), (148025, 4324730), (194525, 3290930), (215375, 2972342), (239705, 2670650), (267065, 2397050), (296050, 2162365), (329093, 1945250), (389050, 1645465), (430750, 1486171), (432473, 1480250), (479410, 1335325), (534130, 1198525), (658186, 972625), (740125, 864946)]