20938950

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1$

素因数の和:147

約数の個数: 144

約数和(自身を含む): 61900800

約数和(自身を除く): 40961850

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 25, 30, 31, 38, 45, 50, 57, 62, 75, 79, 90, 93, 95, 114, 150, 155, 158, 171, 186, 190, 225, 237, 279, 285, 310, 342, 395, 450, 465, 474, 475, 558, 570, 589, 711, 775, 790, 855, 930, 950, 1178, 1185, 1395, 1422, 1425, 1501, 1550, 1710, 1767, 1975, 2325, 2370, 2449, 2790, 2850, 2945, 3002, 3534, 3555, 3950, 4275, 4503, 4650, 4898, 5301, 5890, 5925, 6975, 7110, 7347, 7505, 8550, 8835, 9006, 10602, 11850, 12245, 13509, 13950, 14694, 14725, 15010, 17670, 17775, 22041, 22515, 24490, 26505, 27018, 29450, 35550, 36735, 37525, 44082, 44175, 45030, 46531, 53010, 61225, 67545, 73470, 75050, 88350, 93062, 110205, 112575, 122450, 132525, 135090, 139593, 183675, 220410, 225150, 232655, 265050, 279186, 337725, 367350, 418779, 465310, 551025, 675450, 697965, 837558, 1102050, 1163275, 1395930, 2093895, 2326550, 3489825, 4187790, 6979650, 10469475, 20938950]

約数ペア:

[(1, 20938950), (2, 10469475), (3, 6979650), (5, 4187790), (6, 3489825), (9, 2326550), (10, 2093895), (15, 1395930), (18, 1163275), (19, 1102050), (25, 837558), (30, 697965), (31, 675450), (38, 551025), (45, 465310), (50, 418779), (57, 367350), (62, 337725), (75, 279186), (79, 265050), (90, 232655), (93, 225150), (95, 220410), (114, 183675), (150, 139593), (155, 135090), (158, 132525), (171, 122450), (186, 112575), (190, 110205), (225, 93062), (237, 88350), (279, 75050), (285, 73470), (310, 67545), (342, 61225), (395, 53010), (450, 46531), (465, 45030), (474, 44175), (475, 44082), (558, 37525), (570, 36735), (589, 35550), (711, 29450), (775, 27018), (790, 26505), (855, 24490), (930, 22515), (950, 22041), (1178, 17775), (1185, 17670), (1395, 15010), (1422, 14725), (1425, 14694), (1501, 13950), (1550, 13509), (1710, 12245), (1767, 11850), (1975, 10602), (2325, 9006), (2370, 8835), (2449, 8550), (2790, 7505), (2850, 7347), (2945, 7110), (3002, 6975), (3534, 5925), (3555, 5890), (3950, 5301), (4275, 4898), (4503, 4650)]