51215940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:266

約数の個数: 144

約数和(自身を含む): 165110400

約数和(自身を除く): 113894460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 89, 90, 92, 115, 138, 139, 178, 180, 207, 230, 267, 276, 278, 345, 356, 414, 417, 445, 460, 534, 556, 690, 695, 801, 828, 834, 890, 1035, 1068, 1251, 1335, 1380, 1390, 1602, 1668, 1780, 2047, 2070, 2085, 2502, 2670, 2780, 3197, 3204, 4005, 4094, 4140, 4170, 5004, 5340, 6141, 6255, 6394, 8010, 8188, 8340, 9591, 10235, 12282, 12371, 12510, 12788, 15985, 16020, 18423, 19182, 20470, 24564, 24742, 25020, 28773, 30705, 31970, 36846, 37113, 38364, 40940, 47955, 49484, 57546, 61410, 61855, 63940, 73692, 74226, 92115, 95910, 111339, 115092, 122820, 123710, 143865, 148452, 184230, 185565, 191820, 222678, 247420, 284533, 287730, 368460, 371130, 445356, 556695, 569066, 575460, 742260, 853599, 1113390, 1138132, 1422665, 1707198, 2226780, 2560797, 2845330, 3414396, 4267995, 5121594, 5690660, 8535990, 10243188, 12803985, 17071980, 25607970, 51215940]

約数ペア:

[(1, 51215940), (2, 25607970), (3, 17071980), (4, 12803985), (5, 10243188), (6, 8535990), (9, 5690660), (10, 5121594), (12, 4267995), (15, 3414396), (18, 2845330), (20, 2560797), (23, 2226780), (30, 1707198), (36, 1422665), (45, 1138132), (46, 1113390), (60, 853599), (69, 742260), (89, 575460), (90, 569066), (92, 556695), (115, 445356), (138, 371130), (139, 368460), (178, 287730), (180, 284533), (207, 247420), (230, 222678), (267, 191820), (276, 185565), (278, 184230), (345, 148452), (356, 143865), (414, 123710), (417, 122820), (445, 115092), (460, 111339), (534, 95910), (556, 92115), (690, 74226), (695, 73692), (801, 63940), (828, 61855), (834, 61410), (890, 57546), (1035, 49484), (1068, 47955), (1251, 40940), (1335, 38364), (1380, 37113), (1390, 36846), (1602, 31970), (1668, 30705), (1780, 28773), (2047, 25020), (2070, 24742), (2085, 24564), (2502, 20470), (2670, 19182), (2780, 18423), (3197, 16020), (3204, 15985), (4005, 12788), (4094, 12510), (4140, 12371), (4170, 12282), (5004, 10235), (5340, 9591), (6141, 8340), (6255, 8188), (6394, 8010)]