20587720900

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{907}}^1$

素因数の和:1154

約数の個数: 144

約数和(自身を含む): 47666949120

約数和(自身を除く): 27079228220

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 71, 92, 100, 115, 139, 142, 230, 278, 284, 355, 460, 556, 575, 695, 710, 907, 1150, 1390, 1420, 1633, 1775, 1814, 2300, 2780, 3197, 3266, 3475, 3550, 3628, 4535, 6394, 6532, 6950, 7100, 8165, 9070, 9869, 12788, 13900, 15985, 16330, 18140, 19738, 20861, 22675, 31970, 32660, 39476, 40825, 41722, 45350, 49345, 63940, 64397, 79925, 81650, 83444, 90700, 98690, 104305, 126073, 128794, 159850, 163300, 197380, 208610, 226987, 246725, 252146, 257588, 319700, 321985, 417220, 453974, 493450, 504292, 521525, 630365, 643970, 907948, 986900, 1043050, 1134935, 1260730, 1287940, 1481131, 1609925, 2086100, 2269870, 2521460, 2899679, 2962262, 3151825, 3219850, 4539740, 5674675, 5799358, 5924524, 6303650, 6439700, 7405655, 8951183, 11349350, 11598716, 12607300, 14498395, 14811310, 17902366, 22698700, 28996790, 29622620, 35804732, 37028275, 44755915, 57993580, 72491975, 74056550, 89511830, 144983950, 148113100, 179023660, 205877209, 223779575, 289967900, 411754418, 447559150, 823508836, 895118300, 1029386045, 2058772090, 4117544180, 5146930225, 10293860450, 20587720900]

約数ペア:

[(1, 20587720900), (2, 10293860450), (4, 5146930225), (5, 4117544180), (10, 2058772090), (20, 1029386045), (23, 895118300), (25, 823508836), (46, 447559150), (50, 411754418), (71, 289967900), (92, 223779575), (100, 205877209), (115, 179023660), (139, 148113100), (142, 144983950), (230, 89511830), (278, 74056550), (284, 72491975), (355, 57993580), (460, 44755915), (556, 37028275), (575, 35804732), (695, 29622620), (710, 28996790), (907, 22698700), (1150, 17902366), (1390, 14811310), (1420, 14498395), (1633, 12607300), (1775, 11598716), (1814, 11349350), (2300, 8951183), (2780, 7405655), (3197, 6439700), (3266, 6303650), (3475, 5924524), (3550, 5799358), (3628, 5674675), (4535, 4539740), (6394, 3219850), (6532, 3151825), (6950, 2962262), (7100, 2899679), (8165, 2521460), (9070, 2269870), (9869, 2086100), (12788, 1609925), (13900, 1481131), (15985, 1287940), (16330, 1260730), (18140, 1134935), (19738, 1043050), (20861, 986900), (22675, 907948), (31970, 643970), (32660, 630365), (39476, 521525), (40825, 504292), (41722, 493450), (45350, 453974), (49345, 417220), (63940, 321985), (64397, 319700), (79925, 257588), (81650, 252146), (83444, 246725), (90700, 226987), (98690, 208610), (104305, 197380), (126073, 163300), (128794, 159850)]