20289720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{809}}^1$

素因数の和:853

約数の個数: 128

約数和(自身を含む): 69984000

約数和(自身を除く): 49694280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 19, 20, 22, 24, 30, 33, 38, 40, 44, 55, 57, 60, 66, 76, 88, 95, 110, 114, 120, 132, 152, 165, 190, 209, 220, 228, 264, 285, 330, 380, 418, 440, 456, 570, 627, 660, 760, 809, 836, 1045, 1140, 1254, 1320, 1618, 1672, 2090, 2280, 2427, 2508, 3135, 3236, 4045, 4180, 4854, 5016, 6270, 6472, 8090, 8360, 8899, 9708, 12135, 12540, 15371, 16180, 17798, 19416, 24270, 25080, 26697, 30742, 32360, 35596, 44495, 46113, 48540, 53394, 61484, 71192, 76855, 88990, 92226, 97080, 106788, 122968, 133485, 153710, 169081, 177980, 184452, 213576, 230565, 266970, 307420, 338162, 355960, 368904, 461130, 507243, 533940, 614840, 676324, 845405, 922260, 1014486, 1067880, 1352648, 1690810, 1844520, 2028972, 2536215, 3381620, 4057944, 5072430, 6763240, 10144860, 20289720]

約数ペア:

[(1, 20289720), (2, 10144860), (3, 6763240), (4, 5072430), (5, 4057944), (6, 3381620), (8, 2536215), (10, 2028972), (11, 1844520), (12, 1690810), (15, 1352648), (19, 1067880), (20, 1014486), (22, 922260), (24, 845405), (30, 676324), (33, 614840), (38, 533940), (40, 507243), (44, 461130), (55, 368904), (57, 355960), (60, 338162), (66, 307420), (76, 266970), (88, 230565), (95, 213576), (110, 184452), (114, 177980), (120, 169081), (132, 153710), (152, 133485), (165, 122968), (190, 106788), (209, 97080), (220, 92226), (228, 88990), (264, 76855), (285, 71192), (330, 61484), (380, 53394), (418, 48540), (440, 46113), (456, 44495), (570, 35596), (627, 32360), (660, 30742), (760, 26697), (809, 25080), (836, 24270), (1045, 19416), (1140, 17798), (1254, 16180), (1320, 15371), (1618, 12540), (1672, 12135), (2090, 9708), (2280, 8899), (2427, 8360), (2508, 8090), (3135, 6472), (3236, 6270), (4045, 5016), (4180, 4854)]