21261300

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{131}}^1\times {\mathrm{541}}^1$

素因数の和:689

約数の個数: 72

約数和(自身を含む): 62100192

約数和(自身を除く): 40838892

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 131, 150, 262, 300, 393, 524, 541, 655, 786, 1082, 1310, 1572, 1623, 1965, 2164, 2620, 2705, 3246, 3275, 3930, 5410, 6492, 6550, 7860, 8115, 9825, 10820, 13100, 13525, 16230, 19650, 27050, 32460, 39300, 40575, 54100, 70871, 81150, 141742, 162300, 212613, 283484, 354355, 425226, 708710, 850452, 1063065, 1417420, 1771775, 2126130, 3543550, 4252260, 5315325, 7087100, 10630650, 21261300]

約数ペア:

[(1, 21261300), (2, 10630650), (3, 7087100), (4, 5315325), (5, 4252260), (6, 3543550), (10, 2126130), (12, 1771775), (15, 1417420), (20, 1063065), (25, 850452), (30, 708710), (50, 425226), (60, 354355), (75, 283484), (100, 212613), (131, 162300), (150, 141742), (262, 81150), (300, 70871), (393, 54100), (524, 40575), (541, 39300), (655, 32460), (786, 27050), (1082, 19650), (1310, 16230), (1572, 13525), (1623, 13100), (1965, 10820), (2164, 9825), (2620, 8115), (2705, 7860), (3246, 6550), (3275, 6492), (3930, 5410)]