16820820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{239}}^1$

素因数の和:294

約数の個数: 144

約数和(自身を含む): 56609280

約数和(自身を除く): 39788460

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 23, 30, 34, 36, 45, 46, 51, 60, 68, 69, 85, 90, 92, 102, 115, 138, 153, 170, 180, 204, 207, 230, 239, 255, 276, 306, 340, 345, 391, 414, 460, 478, 510, 612, 690, 717, 765, 782, 828, 956, 1020, 1035, 1173, 1195, 1380, 1434, 1530, 1564, 1955, 2070, 2151, 2346, 2390, 2868, 3060, 3519, 3585, 3910, 4063, 4140, 4302, 4692, 4780, 5497, 5865, 7038, 7170, 7820, 8126, 8604, 10755, 10994, 11730, 12189, 14076, 14340, 16252, 16491, 17595, 20315, 21510, 21988, 23460, 24378, 27485, 32982, 35190, 36567, 40630, 43020, 48756, 49473, 54970, 60945, 65964, 70380, 73134, 81260, 82455, 93449, 98946, 109940, 121890, 146268, 164910, 182835, 186898, 197892, 243780, 247365, 280347, 329820, 365670, 373796, 467245, 494730, 560694, 731340, 841041, 934490, 989460, 1121388, 1401735, 1682082, 1868980, 2803470, 3364164, 4205205, 5606940, 8410410, 16820820]

約数ペア:

[(1, 16820820), (2, 8410410), (3, 5606940), (4, 4205205), (5, 3364164), (6, 2803470), (9, 1868980), (10, 1682082), (12, 1401735), (15, 1121388), (17, 989460), (18, 934490), (20, 841041), (23, 731340), (30, 560694), (34, 494730), (36, 467245), (45, 373796), (46, 365670), (51, 329820), (60, 280347), (68, 247365), (69, 243780), (85, 197892), (90, 186898), (92, 182835), (102, 164910), (115, 146268), (138, 121890), (153, 109940), (170, 98946), (180, 93449), (204, 82455), (207, 81260), (230, 73134), (239, 70380), (255, 65964), (276, 60945), (306, 54970), (340, 49473), (345, 48756), (391, 43020), (414, 40630), (460, 36567), (478, 35190), (510, 32982), (612, 27485), (690, 24378), (717, 23460), (765, 21988), (782, 21510), (828, 20315), (956, 17595), (1020, 16491), (1035, 16252), (1173, 14340), (1195, 14076), (1380, 12189), (1434, 11730), (1530, 10994), (1564, 10755), (1955, 8604), (2070, 8126), (2151, 7820), (2346, 7170), (2390, 7038), (2868, 5865), (3060, 5497), (3519, 4780), (3585, 4692), (3910, 4302), (4063, 4140)]