28705300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{311}}^1$

素因数の和:409

約数の個数: 72

約数和(自身を含む): 68245632

約数和(自身を除く): 39540332

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 71, 100, 130, 142, 260, 284, 311, 325, 355, 622, 650, 710, 923, 1244, 1300, 1420, 1555, 1775, 1846, 3110, 3550, 3692, 4043, 4615, 6220, 7100, 7775, 8086, 9230, 15550, 16172, 18460, 20215, 22081, 23075, 31100, 40430, 44162, 46150, 80860, 88324, 92300, 101075, 110405, 202150, 220810, 287053, 404300, 441620, 552025, 574106, 1104050, 1148212, 1435265, 2208100, 2870530, 5741060, 7176325, 14352650, 28705300]

約数ペア:

[(1, 28705300), (2, 14352650), (4, 7176325), (5, 5741060), (10, 2870530), (13, 2208100), (20, 1435265), (25, 1148212), (26, 1104050), (50, 574106), (52, 552025), (65, 441620), (71, 404300), (100, 287053), (130, 220810), (142, 202150), (260, 110405), (284, 101075), (311, 92300), (325, 88324), (355, 80860), (622, 46150), (650, 44162), (710, 40430), (923, 31100), (1244, 23075), (1300, 22081), (1420, 20215), (1555, 18460), (1775, 16172), (1846, 15550), (3110, 9230), (3550, 8086), (3692, 7775), (4043, 7100), (4615, 6220)]