21749700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{10357}}^1$

素因数の和:10381

約数の個数: 72

約数和(自身を含む): 71925952

約数和(自身を除く): 50176252

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 140, 150, 175, 210, 300, 350, 420, 525, 700, 1050, 2100, 10357, 20714, 31071, 41428, 51785, 62142, 72499, 103570, 124284, 144998, 155355, 207140, 217497, 258925, 289996, 310710, 362495, 434994, 517850, 621420, 724990, 776775, 869988, 1035700, 1087485, 1449980, 1553550, 1812475, 2174970, 3107100, 3624950, 4349940, 5437425, 7249900, 10874850, 21749700]

約数ペア:

[(1, 21749700), (2, 10874850), (3, 7249900), (4, 5437425), (5, 4349940), (6, 3624950), (7, 3107100), (10, 2174970), (12, 1812475), (14, 1553550), (15, 1449980), (20, 1087485), (21, 1035700), (25, 869988), (28, 776775), (30, 724990), (35, 621420), (42, 517850), (50, 434994), (60, 362495), (70, 310710), (75, 289996), (84, 258925), (100, 217497), (105, 207140), (140, 155355), (150, 144998), (175, 124284), (210, 103570), (300, 72499), (350, 62142), (420, 51785), (525, 41428), (700, 31071), (1050, 20714), (2100, 10357)]