21549840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6907}}^1$

素因数の和:6936

約数の個数: 80

約数和(自身を含む): 71953728

約数和(自身を除く): 50403888

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 6907, 13814, 20721, 27628, 34535, 41442, 55256, 69070, 82884, 89791, 103605, 110512, 138140, 165768, 179582, 207210, 269373, 276280, 331536, 359164, 414420, 448955, 538746, 552560, 718328, 828840, 897910, 1077492, 1346865, 1436656, 1657680, 1795820, 2154984, 2693730, 3591640, 4309968, 5387460, 7183280, 10774920, 21549840]

約数ペア:

[(1, 21549840), (2, 10774920), (3, 7183280), (4, 5387460), (5, 4309968), (6, 3591640), (8, 2693730), (10, 2154984), (12, 1795820), (13, 1657680), (15, 1436656), (16, 1346865), (20, 1077492), (24, 897910), (26, 828840), (30, 718328), (39, 552560), (40, 538746), (48, 448955), (52, 414420), (60, 359164), (65, 331536), (78, 276280), (80, 269373), (104, 207210), (120, 179582), (130, 165768), (156, 138140), (195, 110512), (208, 103605), (240, 89791), (260, 82884), (312, 69070), (390, 55256), (520, 41442), (624, 34535), (780, 27628), (1040, 20721), (1560, 13814), (3120, 6907)]