19425420

素因数分解:

$2^2\times 3^5\times 5^1\times 7^1\times {\mathrm{571}}^1$

素因数の和:602

約数の個数: 144

約数和(自身を含む): 69957888

約数和(自身を除く): 50532468

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 243, 252, 270, 315, 324, 378, 405, 420, 486, 540, 567, 571, 630, 756, 810, 945, 972, 1134, 1142, 1215, 1260, 1620, 1701, 1713, 1890, 2268, 2284, 2430, 2835, 2855, 3402, 3426, 3780, 3997, 4860, 5139, 5670, 5710, 6804, 6852, 7994, 8505, 8565, 10278, 11340, 11420, 11991, 15417, 15988, 17010, 17130, 19985, 20556, 23982, 25695, 30834, 34020, 34260, 35973, 39970, 46251, 47964, 51390, 59955, 61668, 71946, 77085, 79940, 92502, 102780, 107919, 119910, 138753, 143892, 154170, 179865, 185004, 215838, 231255, 239820, 277506, 308340, 323757, 359730, 431676, 462510, 539595, 555012, 647514, 693765, 719460, 925020, 971271, 1079190, 1295028, 1387530, 1618785, 1942542, 2158380, 2775060, 3237570, 3885084, 4856355, 6475140, 9712710, 19425420]

約数ペア:

[(1, 19425420), (2, 9712710), (3, 6475140), (4, 4856355), (5, 3885084), (6, 3237570), (7, 2775060), (9, 2158380), (10, 1942542), (12, 1618785), (14, 1387530), (15, 1295028), (18, 1079190), (20, 971271), (21, 925020), (27, 719460), (28, 693765), (30, 647514), (35, 555012), (36, 539595), (42, 462510), (45, 431676), (54, 359730), (60, 323757), (63, 308340), (70, 277506), (81, 239820), (84, 231255), (90, 215838), (105, 185004), (108, 179865), (126, 154170), (135, 143892), (140, 138753), (162, 119910), (180, 107919), (189, 102780), (210, 92502), (243, 79940), (252, 77085), (270, 71946), (315, 61668), (324, 59955), (378, 51390), (405, 47964), (420, 46251), (486, 39970), (540, 35973), (567, 34260), (571, 34020), (630, 30834), (756, 25695), (810, 23982), (945, 20556), (972, 19985), (1134, 17130), (1142, 17010), (1215, 15988), (1260, 15417), (1620, 11991), (1701, 11420), (1713, 11340), (1890, 10278), (2268, 8565), (2284, 8505), (2430, 7994), (2835, 6852), (2855, 6804), (3402, 5710), (3426, 5670), (3780, 5139), (3997, 4860)]