20203820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{653}}^1$

素因数の和:699

約数の個数: 96

約数和(自身を含む): 55375488

約数和(自身を除く): 35171668

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 17, 20, 26, 28, 34, 35, 52, 65, 68, 70, 85, 91, 119, 130, 140, 170, 182, 221, 238, 260, 340, 364, 442, 455, 476, 595, 653, 884, 910, 1105, 1190, 1306, 1547, 1820, 2210, 2380, 2612, 3094, 3265, 4420, 4571, 6188, 6530, 7735, 8489, 9142, 11101, 13060, 15470, 16978, 18284, 22202, 22855, 30940, 33956, 42445, 44404, 45710, 55505, 59423, 77707, 84890, 91420, 111010, 118846, 144313, 155414, 169780, 222020, 237692, 288626, 297115, 310828, 388535, 577252, 594230, 721565, 777070, 1010191, 1188460, 1443130, 1554140, 2020382, 2886260, 4040764, 5050955, 10101910, 20203820]

約数ペア:

[(1, 20203820), (2, 10101910), (4, 5050955), (5, 4040764), (7, 2886260), (10, 2020382), (13, 1554140), (14, 1443130), (17, 1188460), (20, 1010191), (26, 777070), (28, 721565), (34, 594230), (35, 577252), (52, 388535), (65, 310828), (68, 297115), (70, 288626), (85, 237692), (91, 222020), (119, 169780), (130, 155414), (140, 144313), (170, 118846), (182, 111010), (221, 91420), (238, 84890), (260, 77707), (340, 59423), (364, 55505), (442, 45710), (455, 44404), (476, 42445), (595, 33956), (653, 30940), (884, 22855), (910, 22202), (1105, 18284), (1190, 16978), (1306, 15470), (1547, 13060), (1820, 11101), (2210, 9142), (2380, 8489), (2612, 7735), (3094, 6530), (3265, 6188), (4420, 4571)]