21988300

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{173}}^1$

素因数の和:259

約数の個数: 72

約数和(自身を含む): 50746752

約数和(自身を除く): 28758452

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 41, 50, 62, 82, 100, 124, 155, 164, 173, 205, 310, 346, 410, 620, 692, 775, 820, 865, 1025, 1271, 1550, 1730, 2050, 2542, 3100, 3460, 4100, 4325, 5084, 5363, 6355, 7093, 8650, 10726, 12710, 14186, 17300, 21452, 25420, 26815, 28372, 31775, 35465, 53630, 63550, 70930, 107260, 127100, 134075, 141860, 177325, 219883, 268150, 354650, 439766, 536300, 709300, 879532, 1099415, 2198830, 4397660, 5497075, 10994150, 21988300]

約数ペア:

[(1, 21988300), (2, 10994150), (4, 5497075), (5, 4397660), (10, 2198830), (20, 1099415), (25, 879532), (31, 709300), (41, 536300), (50, 439766), (62, 354650), (82, 268150), (100, 219883), (124, 177325), (155, 141860), (164, 134075), (173, 127100), (205, 107260), (310, 70930), (346, 63550), (410, 53630), (620, 35465), (692, 31775), (775, 28372), (820, 26815), (865, 25420), (1025, 21452), (1271, 17300), (1550, 14186), (1730, 12710), (2050, 10726), (2542, 8650), (3100, 7093), (3460, 6355), (4100, 5363), (4325, 5084)]