20785560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{443}}^1$

素因数の和:497

約数の個数: 128

約数和(自身を含む): 69050880

約数和(自身を除く): 48265320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 23, 24, 30, 34, 40, 46, 51, 60, 68, 69, 85, 92, 102, 115, 120, 136, 138, 170, 184, 204, 230, 255, 276, 340, 345, 391, 408, 443, 460, 510, 552, 680, 690, 782, 886, 920, 1020, 1173, 1329, 1380, 1564, 1772, 1955, 2040, 2215, 2346, 2658, 2760, 3128, 3544, 3910, 4430, 4692, 5316, 5865, 6645, 7531, 7820, 8860, 9384, 10189, 10632, 11730, 13290, 15062, 15640, 17720, 20378, 22593, 23460, 26580, 30124, 30567, 37655, 40756, 45186, 46920, 50945, 53160, 60248, 61134, 75310, 81512, 90372, 101890, 112965, 122268, 150620, 152835, 173213, 180744, 203780, 225930, 244536, 301240, 305670, 346426, 407560, 451860, 519639, 611340, 692852, 866065, 903720, 1039278, 1222680, 1385704, 1732130, 2078556, 2598195, 3464260, 4157112, 5196390, 6928520, 10392780, 20785560]

約数ペア:

[(1, 20785560), (2, 10392780), (3, 6928520), (4, 5196390), (5, 4157112), (6, 3464260), (8, 2598195), (10, 2078556), (12, 1732130), (15, 1385704), (17, 1222680), (20, 1039278), (23, 903720), (24, 866065), (30, 692852), (34, 611340), (40, 519639), (46, 451860), (51, 407560), (60, 346426), (68, 305670), (69, 301240), (85, 244536), (92, 225930), (102, 203780), (115, 180744), (120, 173213), (136, 152835), (138, 150620), (170, 122268), (184, 112965), (204, 101890), (230, 90372), (255, 81512), (276, 75310), (340, 61134), (345, 60248), (391, 53160), (408, 50945), (443, 46920), (460, 45186), (510, 40756), (552, 37655), (680, 30567), (690, 30124), (782, 26580), (886, 23460), (920, 22593), (1020, 20378), (1173, 17720), (1329, 15640), (1380, 15062), (1564, 13290), (1772, 11730), (1955, 10632), (2040, 10189), (2215, 9384), (2346, 8860), (2658, 7820), (2760, 7531), (3128, 6645), (3544, 5865), (3910, 5316), (4430, 4692)]