20968875

素因数分解:

$3^4\times 5^3\times {\mathrm{19}}^1\times {\mathrm{109}}^1$

素因数の和:155

約数の個数: 80

約数和(自身を含む): 41527200

約数和(自身を除く): 20558325

約数列:

[1, 3, 5, 9, 15, 19, 25, 27, 45, 57, 75, 81, 95, 109, 125, 135, 171, 225, 285, 327, 375, 405, 475, 513, 545, 675, 855, 981, 1125, 1425, 1539, 1635, 2025, 2071, 2375, 2565, 2725, 2943, 3375, 4275, 4905, 6213, 7125, 7695, 8175, 8829, 10125, 10355, 12825, 13625, 14715, 18639, 21375, 24525, 31065, 38475, 40875, 44145, 51775, 55917, 64125, 73575, 93195, 122625, 155325, 167751, 192375, 220725, 258875, 279585, 367875, 465975, 776625, 838755, 1103625, 1397925, 2329875, 4193775, 6989625, 20968875]

約数ペア:

[(1, 20968875), (3, 6989625), (5, 4193775), (9, 2329875), (15, 1397925), (19, 1103625), (25, 838755), (27, 776625), (45, 465975), (57, 367875), (75, 279585), (81, 258875), (95, 220725), (109, 192375), (125, 167751), (135, 155325), (171, 122625), (225, 93195), (285, 73575), (327, 64125), (375, 55917), (405, 51775), (475, 44145), (513, 40875), (545, 38475), (675, 31065), (855, 24525), (981, 21375), (1125, 18639), (1425, 14715), (1539, 13625), (1635, 12825), (2025, 10355), (2071, 10125), (2375, 8829), (2565, 8175), (2725, 7695), (2943, 7125), (3375, 6213), (4275, 4905)]