78638940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{829}}^1$

素因数の和:892

約数の個数: 144

約数和(自身を含む): 261031680

約数和(自身を除く): 182392740

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 31, 34, 36, 45, 51, 60, 62, 68, 85, 90, 93, 102, 124, 153, 155, 170, 180, 186, 204, 255, 279, 306, 310, 340, 372, 465, 510, 527, 558, 612, 620, 765, 829, 930, 1020, 1054, 1116, 1395, 1530, 1581, 1658, 1860, 2108, 2487, 2635, 2790, 3060, 3162, 3316, 4145, 4743, 4974, 5270, 5580, 6324, 7461, 7905, 8290, 9486, 9948, 10540, 12435, 14093, 14922, 15810, 16580, 18972, 23715, 24870, 25699, 28186, 29844, 31620, 37305, 42279, 47430, 49740, 51398, 56372, 70465, 74610, 77097, 84558, 94860, 102796, 126837, 128495, 140930, 149220, 154194, 169116, 211395, 231291, 253674, 256990, 281860, 308388, 385485, 422790, 436883, 462582, 507348, 513980, 634185, 770970, 845580, 873766, 925164, 1156455, 1268370, 1310649, 1541940, 1747532, 2184415, 2312910, 2536740, 2621298, 3931947, 4368830, 4625820, 5242596, 6553245, 7863894, 8737660, 13106490, 15727788, 19659735, 26212980, 39319470, 78638940]

約数ペア:

[(1, 78638940), (2, 39319470), (3, 26212980), (4, 19659735), (5, 15727788), (6, 13106490), (9, 8737660), (10, 7863894), (12, 6553245), (15, 5242596), (17, 4625820), (18, 4368830), (20, 3931947), (30, 2621298), (31, 2536740), (34, 2312910), (36, 2184415), (45, 1747532), (51, 1541940), (60, 1310649), (62, 1268370), (68, 1156455), (85, 925164), (90, 873766), (93, 845580), (102, 770970), (124, 634185), (153, 513980), (155, 507348), (170, 462582), (180, 436883), (186, 422790), (204, 385485), (255, 308388), (279, 281860), (306, 256990), (310, 253674), (340, 231291), (372, 211395), (465, 169116), (510, 154194), (527, 149220), (558, 140930), (612, 128495), (620, 126837), (765, 102796), (829, 94860), (930, 84558), (1020, 77097), (1054, 74610), (1116, 70465), (1395, 56372), (1530, 51398), (1581, 49740), (1658, 47430), (1860, 42279), (2108, 37305), (2487, 31620), (2635, 29844), (2790, 28186), (3060, 25699), (3162, 24870), (3316, 23715), (4145, 18972), (4743, 16580), (4974, 15810), (5270, 14922), (5580, 14093), (6324, 12435), (7461, 10540), (7905, 9948), (8290, 9486)]