420390

素因数分解:

$2^1\times 3^5\times 5^1\times {\mathrm{173}}^1$

素因数の和:195

約数の個数: 48

約数和(自身を含む): 1140048

約数和(自身を除く): 719658

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 173, 243, 270, 346, 405, 486, 519, 810, 865, 1038, 1215, 1557, 1730, 2430, 2595, 3114, 4671, 5190, 7785, 9342, 14013, 15570, 23355, 28026, 42039, 46710, 70065, 84078, 140130, 210195, 420390]

約数ペア:

[(1, 420390), (2, 210195), (3, 140130), (5, 84078), (6, 70065), (9, 46710), (10, 42039), (15, 28026), (18, 23355), (27, 15570), (30, 14013), (45, 9342), (54, 7785), (81, 5190), (90, 4671), (135, 3114), (162, 2595), (173, 2430), (243, 1730), (270, 1557), (346, 1215), (405, 1038), (486, 865), (519, 810)]