20641040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:121

約数の個数: 160

約数和(自身を含む): 59996160

約数和(自身を除く): 39355120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 29, 31, 35, 40, 41, 56, 58, 62, 70, 80, 82, 112, 116, 124, 140, 145, 155, 164, 203, 205, 217, 232, 248, 280, 287, 290, 310, 328, 406, 410, 434, 464, 496, 560, 574, 580, 620, 656, 812, 820, 868, 899, 1015, 1085, 1148, 1160, 1189, 1240, 1271, 1435, 1624, 1640, 1736, 1798, 2030, 2170, 2296, 2320, 2378, 2480, 2542, 2870, 3248, 3280, 3472, 3596, 4060, 4340, 4495, 4592, 4756, 5084, 5740, 5945, 6293, 6355, 7192, 8120, 8323, 8680, 8897, 8990, 9512, 10168, 11480, 11890, 12586, 12710, 14384, 16240, 16646, 17360, 17794, 17980, 19024, 20336, 22960, 23780, 25172, 25420, 31465, 33292, 35588, 35960, 36859, 41615, 44485, 47560, 50344, 50840, 62930, 66584, 71176, 71920, 73718, 83230, 88970, 95120, 100688, 101680, 125860, 133168, 142352, 147436, 166460, 177940, 184295, 251720, 258013, 294872, 332920, 355880, 368590, 503440, 516026, 589744, 665840, 711760, 737180, 1032052, 1290065, 1474360, 2064104, 2580130, 2948720, 4128208, 5160260, 10320520, 20641040]

約数ペア:

[(1, 20641040), (2, 10320520), (4, 5160260), (5, 4128208), (7, 2948720), (8, 2580130), (10, 2064104), (14, 1474360), (16, 1290065), (20, 1032052), (28, 737180), (29, 711760), (31, 665840), (35, 589744), (40, 516026), (41, 503440), (56, 368590), (58, 355880), (62, 332920), (70, 294872), (80, 258013), (82, 251720), (112, 184295), (116, 177940), (124, 166460), (140, 147436), (145, 142352), (155, 133168), (164, 125860), (203, 101680), (205, 100688), (217, 95120), (232, 88970), (248, 83230), (280, 73718), (287, 71920), (290, 71176), (310, 66584), (328, 62930), (406, 50840), (410, 50344), (434, 47560), (464, 44485), (496, 41615), (560, 36859), (574, 35960), (580, 35588), (620, 33292), (656, 31465), (812, 25420), (820, 25172), (868, 23780), (899, 22960), (1015, 20336), (1085, 19024), (1148, 17980), (1160, 17794), (1189, 17360), (1240, 16646), (1271, 16240), (1435, 14384), (1624, 12710), (1640, 12586), (1736, 11890), (1798, 11480), (2030, 10168), (2170, 9512), (2296, 8990), (2320, 8897), (2378, 8680), (2480, 8323), (2542, 8120), (2870, 7192), (3248, 6355), (3280, 6293), (3472, 5945), (3596, 5740), (4060, 5084), (4340, 4756), (4495, 4592)]