20923002875

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1\times {\mathrm{659}}^1$

素因数の和:981

約数の個数: 64

約数和(自身を含む): 28229160960

約数和(自身を除く): 7306158085

約数列:

[1, 5, 17, 25, 67, 85, 125, 223, 335, 425, 659, 1115, 1139, 1675, 2125, 3295, 3791, 5575, 5695, 8375, 11203, 14941, 16475, 18955, 27875, 28475, 44153, 56015, 74705, 82375, 94775, 142375, 146957, 220765, 253997, 280075, 373525, 473875, 734785, 750601, 1103825, 1269985, 1400375, 1867625, 2498269, 3673925, 3753005, 5519125, 6349925, 9846119, 12491345, 18369625, 18765025, 31749625, 49230595, 62456725, 93825125, 167384023, 246152975, 312283625, 836920115, 1230764875, 4184600575, 20923002875]

約数ペア:

[(1, 20923002875), (5, 4184600575), (17, 1230764875), (25, 836920115), (67, 312283625), (85, 246152975), (125, 167384023), (223, 93825125), (335, 62456725), (425, 49230595), (659, 31749625), (1115, 18765025), (1139, 18369625), (1675, 12491345), (2125, 9846119), (3295, 6349925), (3791, 5519125), (5575, 3753005), (5695, 3673925), (8375, 2498269), (11203, 1867625), (14941, 1400375), (16475, 1269985), (18955, 1103825), (27875, 750601), (28475, 734785), (44153, 473875), (56015, 373525), (74705, 280075), (82375, 253997), (94775, 220765), (142375, 146957)]